System of burning liquid fuel.



A. LAING.

SYSTEM 0F BURNING LIQUID FUEL.

APPLICATION FILED JUNE l0; 1913.

y Patented Sept. 1,1914.

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A. LAING.

SYSTEM OF BURNING LIQUID FUEL. APPLIGATION IL'BD JUNE 10,1913.

DQySQQ@ Patented Sept.1,1914.

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A. LAING.

SYSTEM 0F BURNINGLIQUID FUEL.

APPLICATION FILED JUNE 10, 1913.

Patented sept. 1, 1914.

5 SHEETS-SHEET s.

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A. LAING.

SYSTEM 0F BURNING LIQUID FUEL. n

APPLIGATION FILED JUNE 10,1913.

Patented Sept. 1, 1914.

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Patented Sept. 1, A1914.

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A. LAING.

.SYSTEM 0F BURNING LIQUID FUEL.

APPLIGATION FILED JUNE 10, 1913.

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:ANDREW LAING, OF NEWCASTLE-UPON-TYNE, ENGLAND.

SYSTEM or BUnNrNG LIQUID FUEL.

`Sp-eciication of Lntters Patent.

Patented Sept. 1, 1914.

appneauoafuea :rune 1o, 191s. serial No. 772,756.

To all'whom 'it may concern.'

Be it known that I, ANDREW Lame, a subject of the King of Great Britain,residing in Nevvcastle-upon-Tyne, England, (Whose post-oilice address isOsborne road, Newcastle-upon-Tyne, in the county of Northumberland,England,) have in'- vented a certain new land useful Improved System ofBurning Li uid Fuel, of which the following is a speci cation. v

According to this invention liquid fuel, such as oil is delivered to theburners of oilfired locomotive or other boilers at a high pressure bymeans of fuel pumps, and the atomization of the oil thereby ei'ectedWithout the use of steam jets and consequent liability to deteriorationof the tire box plates and other parts of the combustion chamber. Priorto combustion the oil passes through a heater and a filter and thence tothe burners through a distributing valve boX which is fitted with anemergency cock whereby all the oil burners, with the exception of alighting-up burner, can immediately be put out of action. The emergencycock is designed so that when the oil supply is cut oif from the burnerssteam is admitted to the pipes leading to the burners which have beenshut oif and the oil in these pipes and burners blown into the furnace,thus preventing any possibilty of oil carbonizing in the burners andclogging Same. Vhen the main burners are cut oft it is still necessaryto supply steam to the heater, although in reduced quantity, in orderthat the oil required for the lighting-up burner may be heatedsuiiiciently to enable the burner to burn eiiiciently and without smoke,and to meet this requirement the lever operating the shut of valvesimultaneously actuates a steam regulating cock, the arrangement be ingsuch that when all the burners are alight this cock is fully open tosteam, while When the main burners Aare out of action the regulatingcock cuts o'l" the mainsteam supply but passes steam to the heater insuicient amount to heat the oil required for the supply of thelighting-up burner -or other burners still in operation. These and otherfeatures of the improved system will be more speciiically described withreference to the accompanying' drawings, wherein- Figure l is a frontelevation showing the general arrangement; Fig. 2 is a side eleva-i tionof the same; Fig. 3 a longitudinal sec tion of a furnace; Fig. 3 asimilar view but showing a different disposition of the. fuel burners;Figs. 4 and 5 an .elevation anda lan View respectively on an enlargedscale of the distributing valve box. Fig. 6 is a sectional elevat-ion,and Fig. 7 is a plan view, of one arrangement of distributing boX, 'on alarger scale.

In the apparatus shown the furnace or tire bok 1, which together withthe bridge 2 has 'a lining 3 of refractory material, is provided With anumber of oil burners (three burners, indicated 'at 4, 5, 6, are shownin the drawings), to which the oil is supplied through a distributingbox 7 from a pipe 8. The distributing box is provided With an emergencycock or valve 9 which, in one position, admits oil to the burners 5 andG,

while in another position it cuts oif the oil supply from these burnersand at the same time admits steam through the valves 5b, Gb to theburners 5, 6, thereby blowing out any oil and preventing carbonizationof the same. The steam is also delivered to the blow-through cocks 4a,5l1 and 6 by pipe 10 which branches off from the steam supply pipe 11 tothe oil pump 12, and these cocks are iittedso that steam can be admittedto any one burner for the purpose of clearing that particular burner` ofoil, independently of the remaining burners. The oil fuel pump draws oilfrom a tank or reservoir which may be situated in the engine tender andconnected with the suction inlet of the pump by a flexible pipe anddelivers the oil through pipe 13 to a heater 14 and thence through aiilter 15 to thesupply pipe leading to the distributing box. team 1ssupplied to the pump 12 through pipe 11 from which` a branch leads tothe heater 14: through a regulating cock or valve 17, which regulatingcock or valve is actuated by lever 1S simultaneously with the emergencycock 9 so that when the oil supply is cut olf from burners 5 and G thesteam supply to the heater is correspondingly reduced.

In addition to the valves hereinbefore mentioned the various parts ofthe apparatus are provided with `manually operated regulating or shutoff valves, and one or more pressure gages are also fitted to show theoil pressure at one or more points of the installation.

The distributing box 7, in addition to delivery to the burners, alsodelivers through a by-p'ass valve 1.9 to a pipe 2O leading to tain acirculationof oil when the emergency cock is turned to cut off the mainburners 5 and 6. This by-pass, 'like the burners themselves, trollingtheviow of oil therethrough. One arrangement of the distributing box orvalve arranged to distribute to three burners is shown on a larger scalein Figs. 6 and'?. 'Ihe valve box body is divided into two portions 25aand 25b by the emergency valve 9, the portion 25b being connected to theburners 5 and 6 adapted to be cut off lsimultaneously by the emergencyvalve 9. The portion 25a is connected'by the flange joint 26 with theoil supply pipe 8. A main oil channel 27 runs throughout the valve boxand, is connected by suitable ports to the supply pipes 4, 5c and 6leading to the burners 4, 5 and 6; valves 4b, 5b and 6b for independentregulation of the flow through these pipes being fitted in the box. Aport in the channel 27 valso communicates with the pipe 19 adapted topermit of a continuous circulation of oil through the pump ,when theburners are cut 0H, and a valve 28 is provided for independently cuttingoff or regulating the flow through said pipe. The burner 4 being thepilot or station burner, adapted to be constantly alight, and the pipe19 are connected to part 25a of the valve box which is always inconnection'with the oil supply while the burners 5 and 6, adapted to becut ofi on an emergency simultaneously, are connected to the part 25".The emergency valve 9 is arranged so that it can close the main oilchannel 27 and cut off the supply of oil to the part 25b ofthe valvebox. A steam supply. pipe 29 is also connected to valve 9 bythe port 30which is also provided with a port 31, the'ports being arranged in sucha manner that when the valve 9 is partially turned steam is directedtherethrough into the part 25b of the valve box and so to the burners toblow out any oil remaining therein. A further movement of the valve 9cuts ofi both oil and steam. Independent -steam connections are alsomade through the valve box to the burner supply pipes and are providedwith cocks 4, 5 and 6B- so that steam may be blown through each burnerindependently of the others. A thermometer 32 may be provided on thevalve box to indicate the temperature of the oil.

In the furnace illustrated in Fig. 3, the burners are fitted in thefront plateof the fire box, the burner nozzles projecting inwardlywithin tubes or sleeves 21 extending through the water space includedbetween' fire box 1 and the the front plate.of the boiler plate 22, thenozzle being preferably given a slightly downward inclination as shown.Air is supplied for ,the combustion of the fuel both through the tubes21 and also through air inlets 23, 24 in the outer and inner walls ofthe re box, which are is fitted with a regulator conliquid fuel burners,

'controlled by dampers 23a and 24Et tively.

In the modified construction of furnace shown in Fig. 3*l the burnersproject through sleeves or tubes 21*l equivalent to the sleeves 21 butextending through the inner or forward wall of the fire box so that theoil and products of combustion are projected rearwardly under the bridge3 toward the front end of the fire box.

If more convenient the burners may be introduced at the sides ofthe{ire-box instead of the front or back ends, or they may ge fitted in anytwo or more wallsof the fire- Having thus described the nature of thisinvention and the best means I know of carrying the same into practicaleffect, I claim 1. A liquid fuel burning system comprisingr a combustionchamber, a Iplurality 'of liquid fuel burners, means adapted to feed theliquid fuel to said burners, a valve box distributing the fuel tosaidburners, means therein for regulating each burner independently andmeans for simultaneously cutting out a predetermined number of burners.substantially as described.

2. A liquid fuel burning system comprising a combustion chamber, aplurality of liquid fuel burners, a pump adapted to force the liquidfuel to said burners and to spray it therein, a valve box distributingthe fuel to said burners, means therein for regulating each burnerindependently and meansY for simultaneously cutting out a predeterminednumber of burners, substantially as described.

3. A liquid fuel burning system comprising a combustion chamber, aplurality of liquid fuel burners, means adapted tofeed the fuel to saidburners, a distributing valve box, and means in said distributing valvebox for blowing steam through said burners when they are cut-out,substantially as described.

4. A liquid fuel burning system comprising a combustion chamber, aplurality of liquid fuel'burners, means adapted to feed the saidburners, means therein for regulating each burner independently, meansfor simultaneously cutting out a predetermined number of burners, andmeans when such burners are out out for blowing steam therethrough,substantially as described.

5. A liquid fuel burning system compris- ,ing a combustion chamber, aplurality of means adapted to feed and distribute the fuel to saidburners, a steam heated fuel heater, and means for reducing the steampassed through the heater as the burners are cut off, substantially asdescribed.

6. A liquid fuel burning system comprising a combustion chamber, vaplurality of respecthe liquid fuel to said burners, a steam heatedliquid fuel heater through which the fuel passes, a valve box`distributing the fuel to the burners, and means for simultaneouslydiminishing the supply of steam to the fuel heater, substantially asdescribed. f

7. A liquidfuel burning system comprising a combustion chamber, apluralit u liquid fuel burners, a pump adapted to orce the fuel to saidburners, a valve box'dis'- tributing the fuel to said burners and meansgoverned from said distributing box whereby a circulation of fuel may bemaintained through the pump when the burners are cut off, substantlallyas described.

8. A liquid fuel burning system compris-v ing a combustion chamber, aIpluralit of liquid fuel burners, a pump adapted to orce the fuel tosaid burners, a valve box distributing the fuel tov said burners, meanstherein' for cutting out a predetermined number of burners, and meansgoverned from said distributing boxpwhereby a circulation 'of fuel maybe maintained through the iuxnpwhen the burners are cut off, substanially asdescrifbed. 1 5

9. A liquid fuel 'burning system comprising a combustion chamber,aplur'alit of liquid fuel burners, a pump adapted to orce the fuel tosaid burnersand to spray it therein,` a steam heated fuel heater, avalve box adapted to distribute the fuel tothe burnersl.

a valve therein adapted to cut oif a predetermined number of burners andsimultaneously admit steam `thereto, means simultaneously operated withsaid valve ,to reduce the flow ofsteam to the fuel heater, valvesarranged in the distributing box for independently regulating theseveral burners, vand means also operated from the distributing box formaintaining a circulation of fuel through the pump land heater when theburners are cut oif, substantially as described.

In testimony whereof I have signed. my name to this specification in thepresence of two subscribing witnesses.

ANDREW LAING.

` Witnesses: g

WILLIAM RosEBY TWADDLE, ANDREW Srnor.

